简单工厂模式 UML:

1.我们首先定义一个工厂模式的核心逻辑类:ProductFactoryClass,
2.然后抽象产品类:ProductClass1,ProductClass2
3.接口:IProduct
没啥好说的 直接贴代码吧:
1.外部调用时:
1 SimpleFactory<Product1> product = new SimpleFactory<Product1>(); 2 product.CreateShow().Product(20,200);
2.入口:
1 /// <summary>
2 /// 简单工厂 的实现层
3 /// </summary>
4 public class SimpleFactory<T> where T : new()
5 {
6 private static T _instance;
7 public T CreateShow()
8 {
9 if (_instance == null)
10 {
11 _instance = new T();
12 }
13 return _instance;
14 }
15 }
3.抽象商品类:
1 public class Product1 : IProduct
2 {
3 public void Product(int count, double price)
4 {
5 Console.WriteLine("Total:{0}", count * price);
6 Console.ReadKey();
7 }
8 }
9 public class Product2: IProduct
10 {
11 public void Product(int count, double price)
12 {
13 Console.WriteLine("Total:{0}", count * price*2);
14 Console.ReadKey();
15 }
16 }
4.接口:
1 public interface IProduct
2 {
3 public void Product(int days, double price);
4 }